Aqueous hydrochloric acid will react with solid sodium hydroxide to produce aqueous sodium chloride and liquid water . Suppose 16. g of hydrochloric acid is mixed with 8.45 g of sodium hydroxide. Calculate the maximum mass of water that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits.

Explanation:

a)oil floats on water because oil has less dense than the water.

b) since salt dissolve in water.

c) 1. Decantation -

Oil floats on water (oil is insoluble in water), so it can be decanted easily.

2. Filtration-

Filter the mixture and sand will be separated from the water (as it is insoluble in water), and only salt solution will be left.

3. Evaporation-

The salt solution can be evaporated, by this, the salt will separate out.

There are 32 valence electrons that make up the octet that we find in the atoms in the compound.

We have to has to do with the fact that all the atoms in the compound that we have would have an outermost shell that has been made up of a total of eight electrons. We also know this as the octet rule. What we are saying in the octet rule is that we can't have any atom that is stable unless the atom that is stable can be said to have a total of eight electrons that can be found on the outermost shell of the atom.

We can know the number of the electrons that we have on each of the atoms of the compound if we look at the Lewis structure of the  compound. It is common to use this depiction of the electrons that are found around each of the atoms that is in the molecule as dots to be able to count off the total number of the electrons that we have in the molecule.

There are seven electrons around each of the four chlorine atoms and four valence electrons around silicon making a total of 32 electrons.

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A problem with the use of bromides is bromides build up in the body.

Bromides have a tendency to accumulate in the body over time, leading to a buildup known as bromism. This can occur with prolonged or excessive use of bromide compounds. Bromism can cause various symptoms, including neurological effects such as fatigue, memory impairment, irritability, and even psychiatric symptoms. It is important to note that the effects of bromide accumulation are not immediate, as suggested by option (a) stating that the resulting high is measured in seconds. Hallucinations, mentioned in option (c), are not typically associated with bromides. Additionally, while certain bromide compounds may have carcinogenic properties, it is not a general problem with the use of bromides, as indicated in option (d).

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The molecular formula of the unknown compound is C2H2O2.

To determine the molecular formula of the unknown compound, we need to calculate the empirical formula first and then find the multiple of its subscripts to obtain the molecular formula.

Given:

Percentage of carbon = 40.0%

Percentage of hydrogen = 6.7%

Percentage of oxygen = 53.3%

Molecular mass = 60.0 g/mol

Step 1: Convert the percentages to grams.

Assuming we have 100 grams of the compound:

Mass of carbon = 40.0 g

Mass of hydrogen = 6.7 g

Mass of oxygen = 53.3 g

Step 2: Convert the masses to moles using the molar masses of the elements.

Molar mass of carbon = 12.01 g/mol

Molar mass of hydrogen = 1.008 g/mol

Molar mass of oxygen = 16.00 g/mol

Number of moles of carbon = Mass of carbon / Molar mass of carbon

= 40.0 g / 12.01 g/mol

= 3.332 mol

Number of moles of hydrogen = Mass of hydrogen / Molar mass of hydrogen

= 6.7 g / 1.008 g/mol

= 6.648 mol

Number of moles of oxygen = Mass of oxygen / Molar mass of oxygen

= 53.3 g / 16.00 g/mol

= 3.331 mol

Step 3: Determine the empirical formula by dividing the moles by the smallest value.

Dividing the moles of carbon, hydrogen, and oxygen by 3.331 gives approximately 1 for each element.

So, the empirical formula of the compound is CHO.

Step 4: Determine the multiple of the subscripts to obtain the molecular formula.

To find the multiple, we divide the molecular mass by the empirical formula mass.

Molecular mass = 60.0 g/mol

Empirical formula mass = (12.01 g/mol) + (1.008 g/mol) + (16.00 g/mol) = 29.018 g/mol

Multiple = Molecular mass / Empirical formula mass

= 60.0 g/mol / 29.018 g/mol

= 2.07

Rounding to the nearest whole number, we get 2.

Therefore, the molecular formula of the unknown compound is C2H2O2.

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Answer: 2N2O3 -> 2N2 + 3O2

Explanation:

Answer:

2 2 3

Explanation:

2N2O3=2N2+3O2.. ....

Answer:

covalent bond- a chemical bond that is the sharing of electron pairs between atoms

The reagent KOH can be used for this process. Ca(OH)2(s) + K+(aq)KOH(aq) + Ba2+(aq) → Ba(OH)2(s) + K+(aq) is the formula of the precipitate.

It is possible to use KOH to separate Ca2+ and Ba2+ ions in an aqueous solution.

When you add KOH to a solution containing Ca2+ and Ba2+ ions, it results in the formation of Ca(OH)2 and Ba(OH)2 precipitates. These precipitates are insoluble in water. They are readily seen as they form an insoluble white precipitate.

KOH(aq) + Ca2+(aq) = Ca(OH)2(s) + K+(aq)KOH(aq) + Ba2+(aq) → Ba(OH)2(s) + K+(aq)

The formation of these two precipitates allows the Ca2+ and Ba2+ ions to be separated from the aqueous solution. The formula of the precipitates is Ca(OH)2 and Ba(OH)2.

In summary, KOH can be used to separate Ca2+ and Ba2+ ions in an aqueous solution. When added, it results in the formation of Ca(OH)2 and Ba(OH)2 precipitates which are insoluble in water and readily seen as they form an insoluble white precipitate. This method allows the Ca2+ and Ba2+ ions to be separated from the aqueous solution. The formula of the precipitates is Ca(OH)2 and Ba(OH)2. Therefore, the separation of Ca2+ and Ba2+ ions using KOH is an effective way to isolate them from a mixture.

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Explanation:

Without even doing any calculations I would say that the 20 g HNO3 is limiting

But let us check if my opinion is correct

Balanced equation:

CaO(s) + 2HNO3 (aq) → Ca(NO3)2 (aq) + H2O(l)

1 mol CaO reacts with 2 mol HNO3

Molar mass CaO = 56 g/mol

Mol CaO in 615 g = 615 g / 56 g/mol = 10.98 mol

This will react with 10.98 * 2 = 21.96 mol HNO3

Molar mass HNO3 = 63 g/mol

Mol HNO3 in 20 g = 20 g / 63 g/mol = 0.317 mol

Clearly - my original idea correct - HNO3 is limiting .

The reaction stoichiometry can be used to determine the precise quantity of reactant that will be required to react with another element. The limiting agent is determined by the mole ratio rather than the mass of the reactants. Here the mass of calcium nitrate formed is 16.82 g.

Reagents that are entirely consumed by a chemical reaction are known as limiting reagents. They are additionally known as limiting reactants or limiting agents. A predetermined quantity of reactants are necessary for the reaction to be completed, according to the stoichiometry of chemical reactions.

The limiting reactant determines the maximum amount of product that can be formed from the reactants when reactants are not present in stoichiometric quantities.

Here the equation is:

CaO + 2HNO₃ → Ca (NO₃)₂ + H₂O

'n' of CaO = 15 / 56 = 0.267 mol

n of HNO₃ = 20 / 63 = 0.317 mol

1 mol of CaO 2 moles of HNO₃

0.267 mol = 0.267 × 2 = 0.534 mol

So HNO₃ is the limiting reactant.

0.267 mol CaO gives 0.267 mol Ca (NO₃)₂

Mass of HNO₃ = 0.267 × 63.01 = 16.82 g

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102 g of AI2O3 are formed from 54 g of AI and excess oxygen.

No, a stationary state is one that has a specific amount of energy, total angular momentum, and parity; in a stable state, the particle is moving while possessing all of these physical characteristics.

A negative charge subatomic particle known as an electron can either be free or attached to an atom (not bound). Each of the three main types of components within an atom is an atom that is bonded to it; the other three are proton and neutrons.

The electron, the smallest constituent part of an atom, has a negative surface charge. Protons and electrons are present in an atom in a neutral state in an equal number. The hydrogen ion only possesses one atom or one proton. On the other way, the uranium atom possesses 92 protons, which means 92 electrons.

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Answer:

reactants. product

Al(1) Al(1)

Cl(2) Cl(3)

2Al+3Cl2 ---> 2AlCl3

reactants. product

Al(2) Al(2)

Cl(6) Cl(6)

In a balanced chemical equation, the mass and the charge are both equal. Here the balanced equation is 2Al+3Cl₂ → 2AlCl₃. Here the number of Al and Cl on both sides of the equation are equal.

A balanced chemical equation, in which the masses of the reactants and products are equal, contains the same amount of atoms of each element on both sides of the equation. In other words, both sides of the reaction have an equal balance of mass and charge.

Making both sides of the reaction, the reactants and the products, equal in the number of atoms per element is the ultimate goal of balancing chemical equations.

In order to balance the equation, Al+Cl₂ → AlCl₃, multiply 'Al' and 'AlCl₃' by 2 and Cl₂ by 3. So that the number of 'Al' atoms becomes 2 and 'Cl' atoms becomes 6.

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The mineral that has the smallest cation is lead II sulfide.

We know that a cation has to do with a positive ion. A positive ion is one that is formed by the loss of electrons in most instances, the ion is formed by the loss of an entire shell hence the ionic radius of a positive ion is always smaller than the corresponding atomic radius.

In this case, we know that the sizes of atoms does decrease across the period. As such the trends in the atomic size and the ionic sizes is that they decrease across the period. This is what would help us to be able to decide the cation that is the smallest.

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The volume of the vessel required to hold 1000 kg of cyclohexane at 609.85°C and 50 atm pressure can be estimated using the compressibility chart provided in the data sheet.

To estimate the volume of the vessel, we can use the compressibility chart, which provides information about the behavior of a substance in relation to its pressure and temperature.

In this case, we are dealing with cyclohexane (C6H12), and we have the critical data for this compound: Tc (critical temperature) = 554 K, pc (critical pressure) = 40.57 atm, and തc (acentric factor) = 0.312 mol-1.

The compressibility chart helps us determine the compressibility factor (Z), which is a measure of how the real gas deviates from ideal gas behavior. For a given pressure and temperature, we can locate the corresponding Z value on the compressibility chart.

By using the given pressure of 50 atm and temperature of 609.85°C, we can find the corresponding Z value from the compressibility chart. Once we have the Z value, we can use it to calculate the volume of the vessel required to hold 1000 kg of cyclohexane.

Comparing this volume with the ideal gas volume, we can assess the deviation from ideal gas behavior. Ideal gases follow the ideal gas law, which assumes that the volume is directly proportional to the number of moles and the temperature, and inversely proportional to the pressure.

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If two moles of sulfur trioxide are produced from two moles of sulfur dioxide and one mole of oxygen, then one mole of sulfur trioxide is produced from one mole of sulfur dioxide and 1/2 mole of oxygen.

Therefore, to find out how many moles of sulfur trioxide are produced from 4 moles of sulfur dioxide, we need to first calculate how many moles of oxygen are required.


- Two moles of sulfur trioxide are produced from two moles of sulfur dioxide and one mole of oxygen.
- This means that one mole of sulfur trioxide is produced from one mole of sulfur dioxide and 1/2 mole of oxygen.
- To find out how many moles of sulfur trioxide are produced from 4 moles of sulfur dioxide, we need to calculate how many moles of oxygen are required.
- Since one mole of sulfur dioxide requires 1/2 mole of oxygen, 4 moles of sulfur dioxide will require 2 moles of oxygen.
- Therefore, 4 moles of sulfur dioxide will produce 4 moles of sulfur trioxide.



The given chemical equation is:

2 SO2 + O2 → 2 SO3

This equation tells us that two moles of sulfur trioxide are produced from two moles of sulfur dioxide and one mole of oxygen.

We can use stoichiometry to find out how many moles of sulfur trioxide are produced from 4 moles of sulfur dioxide.

Step 1: Calculate how many moles of oxygen are required to produce 4 moles of sulfur dioxide.

From the chemical equation, we know that 2 moles of sulfur dioxide react with 1 mole of oxygen to produce 2 moles of sulfur trioxide.

Therefore, 1 mole of sulfur dioxide requires 1/2 mole of oxygen to produce 1 mole of sulfur trioxide.

To produce 4 moles of sulfur trioxide from sulfur dioxide, we need:

4 moles SO2 x (1/2) moles O2/mole SO2 = 2 moles O2

Step 2: Calculate how many moles of sulfur trioxide are produced from 4 moles of sulfur dioxide and 2 moles of oxygen.

From the chemical equation, we know that 2 moles of sulfur dioxide and 1 mole of oxygen react to produce 2 moles of sulfur trioxide.

Therefore, 1 mole of sulfur dioxide and 1/2 mole of oxygen react to produce 1 mole of sulfur trioxide.

To produce 4 moles of sulfur trioxide, we need:

4 moles SO2 x (1 mole SO3/1 mole SO2) = 4 moles SO3

Therefore, 4 moles of sulfur dioxide will produce 4 moles of sulfur trioxide.

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The purpose of adjusting the vacuum in an Up in Smoke Lab is to control the pressure within a closed system, typically a distillation setup, in order to perform efficient separations of the components in a mixture based on their boiling points.

A vacuum pump is used to reduce the pressure in the system, allowing the components with lower boiling points to boil at lower temperatures, thereby facilitating their separation from those with higher boiling points. By controlling the vacuum, the lab can precisely adjust the conditions under which the separation takes place, leading to more accurate and reproducible results.

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Answer:

I'd wanna see whats in the nuclues

Explanation:

Because its interesting to know what and how it really looks like up close. I also wanna know if an electron really has a light mass

If the concentration of \(HNO_{2}\) is small (less than 5% of the initial concentration), we can make the simplifying assumption that x is small.

To determine the pH of an \(HNO_{2}\) solution, we need to first write the balanced chemical equation for the dissociation of \(HNO_{2}\).
\(HNO_{2}\)+ \(H_{2}O\)⇌ \(H_{3}O\)+ + \(NO_{2} ^{-}\)
The equilibrium constant expression for this reaction is:
Ka = [\(H_{3}O\)][\(NO_{2} ^{-}\)]/[\(HNO_{2}\)]
The pH of the solution can be calculated using the expression:
pH = -log[\(H_{3}O\)]
To calculate the pH of an \(HNO_{2}\) solution of a particular concentration, we need to know the value of Ka for \(HNO_{2}\) at that temperature. At 25°C, the value of Ka for \(HNO_{2}\) is 4.5 x 10^-4.
If the concentration of \(HNO_{2}\) is small (less than 5% of the initial concentration), we can make the simplifying assumption that x is small and ignore it in the denominator of the Ka expression. This allows us to use the quadratic equation to solve for the concentration of \(H_{3}O\) and then calculate the pH.

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Answer:

Yellow

Explanation:

Thymol blue has a brownish-green or reddish-brown color and is a good pH indicator. It changes from red to yellow at a pH 1.2–2.8 ( acidic) and then from yellow to blue at a pH of 8.0–9.6( alkaline).

Nitric acid is a strong acid which means the pH indicator will change to yellow.

As the first blank is already filled, this first property is called the Cohesive property of water, which is what makes it possible to clump together into drops, due to their intermolecular forces.

The second blank is talking about density, and as we can see in our daily lives, ice is less dense than water, therefore in this blank liquid water will be MORE dense than ice, this is due to the hydrogen bonds and the orientation in which they are causing the molecules to push farther apart.

As we have discussed in the second blank, this 3rd blank is ICE FLOATS

The property of matter that is conserved in chemical reactions and shown by balanced equations is known as the Law of Conservation of Mass. According to this law, mass can neither be created nor destroyed in a chemical reaction; it can only be transformed from one form to another.For instance, when two substances are combined, they react and form a new substance.

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Answer:

\(\boxed {\boxed {\sf C. \ 9460 \ kJ}}\)

Explanation:

The formula we must use is given to us:

\(q=mL_{vapor}\)

q is the energy, m is the mass, and L(vapor) is the latent heat of vaporization.

The energy is what we calculate and the mass is 2 kilograms. We need to find the latent heat of vaporization, which is on the table.

Now we know:

\(m= 2 \ kg \\L_{vapor}=4730 \ kJ/kg\)

Substitute the values into the formula.

\(q=(2 \ kg ) * (4730 \ kJ/kg)\)

Multiply. Note that the kilograms (kg) will cancel each other out.

\(q= 2* 4730 \ kJ\)

\(q= 9460 \ kJ\)

9460 kilojoules are required to vaporize 2 kilograms of copper.

Answer:

To be a mineral a substance must meet five requirements:

1 .naturally occurring (not made by humans)

2.inorganic (not produced by an organism)

3.solid

4.a limited range of chemical compositions

5.ordered atomic structure

Explanation:

Investing in property can offer several advantages and disadvantages. Here are three pros and three cons of investing in property:

Pros of Investing in Property:

Potential for Appreciation: One of the main advantages of property investment is the potential for property value appreciation over time. Real estate properties, especially in desirable locations, have the potential to increase in value, allowing investors to build wealth and generate a return on their investment.

Rental Income: Property investment can provide a steady stream of rental income. By purchasing residential or commercial properties and renting them out to tenants, investors can generate regular cash flow, which can be particularly beneficial for long-term financial planning or as an additional income source.

Portfolio Diversification: Investing in property allows for diversification of an investment portfolio. Real estate is considered an alternative asset class that can help balance the risk and return profile of an investment portfolio that may primarily consist of stocks and bonds. Adding property investments can reduce exposure to volatility in other markets.

Cons of Investing in Property:

High Initial Costs: Acquiring property often requires a substantial upfront investment. Investors need to consider the down payment, closing costs, property maintenance expenses, and potential renovation costs. This can be a barrier for individuals with limited capital or seeking more liquid investments.

Market Volatility and Liquidity: The property market can be subject to fluctuations and cycles, which can affect property values. Unlike stocks or bonds, buying or selling property may take time and effort, reducing liquidity. In certain market conditions, it may be challenging to sell a property quickly if needed.

Management and Maintenance: Property investment requires active management and ongoing maintenance. Landlords are responsible for property upkeep, repairs, and addressing tenant issues. Managing rental properties can be time-consuming and may involve dealing with various challenges such as vacancies, property damage, and rental disputes.

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Answer:

Answers are numbered below:

Explanation:

"The three parts of the cell theory are as follows: (1) All living things are made up of cells, (2) Cells are the smallest units (or most basic building blocks) of life, and (3) All cells come from preexisting cells through the process of cell division..."

I hope this helps you! Have a great day!

While employers have a significant role in ensuring safety and compliance in the workplace, chemical evaluations involve a collective effort involving multiple stakeholders.

This includes chemical manufacturers, regulatory agencies, research institutions, and individuals handling chemicals. Each party has distinct responsibilities in chemical evaluations, such as conducting hazard assessments, providing safety data sheets, complying with regulations, and implementing safe practices. Ultimately, all stakeholders have a shared responsibility to prioritize the safety and well-being of individuals and the environment when it comes to chemical evaluations and handling.

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Answer: Mass

Explanation: Extensive properties, such as mass and volume, depend on the amount of matter being measured.

......Hope this helps

Answer:Mass

Explanation:

Which of these properties of matter depends on the amount of a sample present?

A. Ductility

B. Color

C. Mass

D. Density

Answer:

Formation of sedimentary rocks

Explanation:

I believe this is correct, May I get a brainliest???

Answer:

Explanation:

The question requires us to calculate the volume (in L) of a gas under the conditions given.

The following information was provided by the question:

Initial volume of gas = V1 = 2.00 L

Initial temperature of gas = T1 = 25.0 °C

Initial pressure of gas = P1 = 1.08 atm

Final temperature of gas = T2 = 100 °C

Final pressure of gas = P2 = 1.50 atm

To solve this problem, we'll need to apply the equation of ideal gases (shown below) twice: first, to determine the number of moles of gas, and again to calculate the volume of gas under the final conditions. Note that we'll determine the number of moles of gas under the initial conditions because this amount won't change (as we're talking about the same sample of gas).

Answer:

Mixing chamber

Answer: It supplies water to nearly half of US households.